<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>购物车案例</title>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
  </head>
  <style>
    table {
      border: 1px solid #e9e9e9;
      border-collapse: collapse;
      border-spacing: 0;
    }
    th,
    td {
      padding: 8px 16px;
      border: 1px solid #e9e9e9;
      text-align: left;
    }
    th {
      background-color: #f7f7f7;
      color: #5c6b77;
      font-weight: 600;
    }
  </style>
  <body>
    <div id="app">
      <div v-if="books.length">
        <table>
          <thead>
            <tr>
              <th></th>
              <th>书籍名称</th>
              <th>出版日期</th>
              <th>价格</th>
              <th>购买数量</th>
              <th>操作</th>
            </tr>
          </thead>
          <tbody>
            <tr v-for="(item,index) in books">
              <td>{{item.id}}</td>
              <td>{{item.name}}</td>
              <td>{{item.date}}</td>
              <td>{{item.price | showPrice}}</td>
              <td>
                <button
                  @click="decrement(index)"
                  v-bind:disabled="item.count<=1"
                >
                  -
                </button>
                {{item.count}}
                <button @click="increment(index)">+</button>
              </td>
              <td><button @click="removeHandle(index)">移除</button></td>
            </tr>
          </tbody>
        </table>
        <h2>总价格：{{totalPrice | showPrice}}</h2>
      </div>
      <h1 v-else>购物车为空</h1>
    </div>
    <script src="./index.js"></script>
  </body>
</html>
